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Plant Block Schematic
Reasons for Gas Dehydration
Topics
Water Content of Hydrocarbons
Equilibrium considerations
Water content of natural gas
Water content of natural gas – typical pipeline specs
Water content of natural gas
Applicability of dehydration processes
Dehydration by Absorption
Equilibrium considerations
Typical Glycols
Glycol molecular structure
Equilibrium water content above TEG solutions
Example – Equilibrium water content above TEG solutions
Equilibrium water content for TEG solutions
Typical Glycol Dehydration Unit
Example based on GPSA Data Book
Solubility of hydrocarbons in glycol solutions
Field Glycol Dehydrator
Common Operational Problems
Dehydration by Adsorption
Absorption vs Adsorption
Physical absorption
Adsorption fundamentals
Physical Adsorption Fundamentals
Adsorption Isotherms
Solid Desiccant Dehydrator – Twin Tower System
Typical Vessel Loading
Concentration Profile
Regenerating Bed Temperature History
Common Adsorbents for Drying
Design steps
Design equations
Other Dehydration Processes
Other processes
Twister Operating Principle
Comparison of Dehydration Processes
Summary
Supplemental Slides
Glycol Dehydration Unit
Mole Sieve Dehydration Unit
Zeolite structures